Fix virtual/override/final usage in Source/platform/.

Source/platform/audio/StereoPanner.h

Index: Source/platform/audio/StereoPanner.h
diff --git a/Source/platform/audio/StereoPanner.h b/Source/platform/audio/StereoPanner.h
index 05090e6c2056bfd31158bb82e9f8e339d1fe3466..14b9caefe28b8d7bcf927705835781f8bf73f119 100644
--- a/Source/platform/audio/StereoPanner.h
+++ b/Source/platform/audio/StereoPanner.h
@@ -16,13 +16,13 @@ class PLATFORM_EXPORT StereoPanner final : public Spatializer {
 public:
     explicit StereoPanner(float sampleRate);
 
-    virtual void panWithSampleAccurateValues(const AudioBus* inputBus, AudioBus* outputBuf, const float* panValues, size_t framesToProcess) override;
-    virtual void panToTargetValue(const AudioBus* inputBus, AudioBus* outputBuf, float panValue, size_t framesToProcess) override;
+    void panWithSampleAccurateValues(const AudioBus* inputBus, AudioBus* outputBuf, const float* panValues, size_t framesToProcess) override;
+    void panToTargetValue(const AudioBus* inputBus, AudioBus* outputBuf, float panValue, size_t framesToProcess) override;
 
-    virtual void reset() override { }
+    void reset() override { }
 
-    virtual double tailTime() const override { return 0; }
-    virtual double latencyTime() const override { return 0; }
+    double tailTime() const override { return 0; }
+    double latencyTime() const override { return 0; }
 
 private:
     bool m_isFirstRender;